Method for manufacturing an active material layer and a battery, an electrode stack, and a battery.

Abstract

According to the method disclosed herein, an active material layer having grooves of any shape can be formed. [Solution] The present disclosure method for manufacturing an active material layer includes coating a positive electrode composite layer 140 and / or a negative electrode composite layer 160 with ethylene carbonate 200 in a predetermined pattern, and pressing the positive electrode composite layer 140 and / or a negative electrode composite layer 160 coated with ethylene carbonate 200 to obtain a positive electrode active material layer and / or a negative electrode active material layer having grooves corresponding to a predetermined pattern.

Claims

1. Coating the electrode composite layer with ethylene carbonate in a predetermined pattern, and The electrode composite layer coated with ethylene carbonate is pressed to obtain an active material layer having grooves corresponding to the predetermined pattern. A method for producing an active material layer, including the active material layer.

2. The method according to claim 1, wherein the groove portion has at least one of the following structures: (i) The groove portion extends in the planar direction such that it spreads substantially radially from the end face side near the injection hole of the active material layer toward the other end face side of the active material layer. (ii) A structure in which the groove portion forms a branched channel extending in the planar direction, (iii) A structure in which the groove portion does not reach at least one edge of the active material layer. (iv) The groove portion has a spiral or spiderweb-like structure.

3. A method for manufacturing a battery, The battery has a first current collector layer, a first active material layer, a solid electrolyte layer or separator, a second active material layer, and a second current collector layer in this order, The method comprising producing the first and / or second active material layer by the method described in claim 1 or 2, Battery manufacturing method.

4. An electrode laminate having an active material layer and a current collector layer in contact with the active material layer, The active material layer has a groove on the side opposite to the current collector layer, and The electrode laminate has at least one of the following structures in the groove: (i) The groove portion extends in the planar direction such that it spreads substantially radially from the end face side near the injection hole of the active material layer toward the other end face side of the active material layer. (ii) A structure in which the groove portion forms a branched channel extending in the planar direction, (iii) A structure in which the groove portion does not reach at least one edge of the active material layer. (iv) The groove portion has a spiral or spiderweb-like structure.

5. The device has a first current collector layer, a first active material layer, a solid electrolyte layer or separator, a second active material layer, and a second current collector layer in this order, The combination of the first current collector layer and the first active material layer, and / or the combination of the second current collector layer and the second active material layer constitutes the electrode laminate described in claim 4. battery.

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